Rhythmic Notation in Plainchant from Sixteenth-Century Chaumont?

Fifteenth- and sixteenth-century chant manuscripts from the collegiate church of St. John Baptist in Chaumont, France, have a notational anomaly: among standard features square notation, graphically elongated forms are used. These signs, often two to three times length square, frequently found at ends words sometimes combination with other neumes. The use signs suggests that their presence is not merely space-filling or ornamental, but rather, they must been intended influence some aspect how was sung. Using series six criteria alongside contemporary music theoretical writings, I investigate sign by church’s scribes propose likely interpretations.